Yukon Gear CK GM8.5 Carrier Install Kit for GM 8.5in and 8.2in Rear Differential
The CK GM8.5 from Yukon Gear is a complete carrier installation kit engineered for the GM 8.5in and GM 8.2in rear differential. The GM 8.5in 10-bolt is one of the most common rear axles in GM truck, SUV, and car production, covering Chevrolet and GMC C/K trucks, Blazer, Jimmy, Camaro, El Camino, and Suburban applications across several decades. The CK GM8.5 provides carrier bearings, races, pinion seal, and shim kit needed to complete a gear ratio change or carrier installation when using an OEM-size carrier with standard journal dimensions.
Features and Benefits
- Timken carrier bearings and matched races for precise carrier positioning
- Pinion seal included to prevent rear differential fluid from leaking
- Complete shim kit for accurate backlash adjustment
- Designed for GM 8.5in and GM 8.2in rear differential with standard OEM-size carrier bearing journals
- Covers C/K 1500, C/K 2500, Blazer, Jimmy, Camaro, El Camino, Suburban, and more
- Manufactured to Yukon Gear quality standards for reliable performance
Fitment
| Year | Make | Model | Notes |
|---|---|---|---|
| 1970-2000 | Chevrolet/GMC | C/K 1500, C/K 2500 | GM 8.5in 10-bolt rear, OEM-size carrier |
| 1970-2000 | Chevrolet | Camaro | GM 8.5in 10-bolt rear, OEM-size carrier |
| 1970-2000 | Chevrolet | El Camino | GM 8.5in 10-bolt rear, OEM-size carrier |
| 1970-2000 | Chevrolet/GMC | Blazer/Jimmy | GM 8.5in 10-bolt rear, OEM-size carrier |
| 1970-2000 | Chevrolet/GMC | Suburban | GM 8.5in 10-bolt rear, OEM-size carrier |
| 1964-1972 | Chevrolet | Various | GM 8.2in rear (select models with OEM carrier) |
Specifications
| Attribute | Detail |
|---|---|
| Part Number | CK GM8.5 |
| UPC | 883584570080 |
| Differential | GM 8.5in 10-bolt rear, GM 8.2in rear |
| Kit Type | Carrier Install Kit |
| Carrier Bearing Journal | Standard OEM-size (for OEM and OEM-replacement carriers) |
| Included Components | Carrier bearings, carrier races, pinion seal, shim kit |
| Warranty | Yukon Gear limited warranty against defects in materials and workmanship |
What's Included
- Timken carrier bearings (2)
- Carrier bearing races (2)
- Pinion seal
- Shim kit for backlash adjustment
Frequently Asked Questions
- What differential does CK GM8.5 fit? The CK GM8.5 fits the GM 8.5in 10-bolt rear differential and GM 8.2in rear differential using an OEM-size carrier. It covers a wide range of Chevrolet and GMC trucks, SUVs, and cars from 1964 through 2000.
- Does CK GM8.5 include a pinion seal? Yes. Unlike some carrier-only kits, the CK GM8.5 includes a pinion seal to allow a more complete differential service.
- What is the difference between CK GM8.5 and CK GM8.5-HD? The CK GM8.5 uses standard OEM-size carrier bearings for use with the OEM carrier or OEM-replacement carriers. The CK GM8.5-HD uses heavy-duty bearings sized for larger 1.562in journal aftermarket posi and locker units.
- Does CK GM8.5 include a shim kit? Yes. The CK GM8.5 includes a complete shim kit for setting backlash during carrier installation.
- Does CK GM8.5 fit the GM 8.2in differential? Yes. The CK GM8.5 also covers the GM 8.2in rear differential used in many 1960s and early 1970s GM passenger cars and trucks with the OEM-size carrier.
- Can CK GM8.5 be used when installing a locker or posi unit? The CK GM8.5 is designed for OEM-size carrier bearings. If your aftermarket locker or posi unit uses larger 1.562in OD carrier bearing journals, use the CK GM8.5-HD instead.
- Is this kit covered under the Magnuson-Moss Warranty Act? Yes. As a consumer product sold in the United States, the CK GM8.5 is subject to the provisions of the Magnuson-Moss Warranty Act. Yukon Gear provides a limited warranty against defects in materials and workmanship. Installation of aftermarket differential components does not void your vehicle manufacturer's warranty on unrelated systems under federal law.
- Does CK GM8.5 fit the 1999-2008 GM 8.6in differential? No. The CK GM8.5 is designed for the 8.5in and 8.2in differentials. For the 8.6in used in 1999-2008 GM trucks, see the Yukon PK GM8.6-A pinion kit or specific 8.6in carrier kits.
Installation Instructions
- Safely raise and support the vehicle. Drain differential fluid from the GM 8.5in housing.
- Remove the differential cover. Remove carrier bearing caps, marking them for reassembly in their original positions.
- Remove the differential carrier from the housing.
- Press off original carrier bearings. Install new Timken carrier bearings from the CK GM8.5 using a press.
- Install new carrier bearing races from the CK GM8.5 into the housing bores, fully seated.
- Install the carrier into the housing. Use the shim kit from the CK GM8.5 to adjust backlash to manufacturer specification.
- Verify gear contact pattern with marking compound. Adjust shims as needed.
- Reinstall bearing caps in original positions and torque to specification.
- Replace the pinion seal using the new seal from the CK GM8.5. Reinstall pinion flange and torque to specification.
- Reinstall differential cover with new gasket or RTV. Fill with correct GM-spec differential fluid to the proper level. Lower vehicle.
Prop 65 Warning: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.
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